''Passiflora rubra'', the Dutchman's laudanum, is a species in the family

Passifloraceae The Passifloraceae are a family of flowering plants, containing about 750 species classified in around 27 genera. They include trees, shrubs, lianas, and climbing plants, and are mostly found in tropical regions. The family takes its name from t ...

. It is native throughout the

West Indies The West Indies is a subregion of North America, surrounded by the North Atlantic Ocean and the Caribbean Sea that includes 13 independent island countries and 18 dependencies and other territories in three major archipelagos: the Greater A ...

, and to Colombia, Venezuela, Peru, Ecuador, Bolivia and eastern Brazil. ''Passiflora rubra'' is vegetatively almost indistinguishable from ''

Passiflora capsularis ''Passiflora capsularis'' is a member of the family Passifloraceae The Passifloraceae are a family of flowering plants, containing about 750 species classified in around 27 genera. They include trees, shrubs, lianas, and climbing plants, an ...

'', but the two species may be distinguished in flower and fruit. The ovaries of the flowers of ''Passiflora rubra'' has a dense coating of white, or less commonly brownish hairs, and the fruit, while variable in shape, is always obovoid, unlike that of ''Passiflora capsularis'' which is tapering at both ends.

References

rubra Plants described in 1753 Taxa named by Carl Linnaeus {{Passifloraceae-stub